Book excerpt: This new volume, Biological Assessment of Natural and Anthropogenic Ecosystems: Trends in Diagnosis of Environmental Stress, diverse methods and achievements in assessing the biological state of ecosystems are presented, biochemical, genetic and cytological methods are used, methodological achievements in this area are discussed in this volume. Experimental and practical aspects of the genetic diversity of cultivated plants and its application in modern business conditions are considered. The use of biological indicators for the purpose of protecting nature and practical application is presented. The authors of the book are biologists, biochemists, genetics, and ecologists from prestigious scientific institutions. This volume explores different types, different plant tissues and intracellular structures for the diagnosis and prediction of anthropogenic effects on living natural systems. Here, scientific information on the bioindication properties of living systems is presented and the theoretical foundations of its study are emphasized. This authoritative reference source will be a valuable addition for scientific researchers and students working in the field of biology, ecology, genetics, cytogenetics, agronomy and environmental assessment and its protection from anthropogenic destruction. The authors highlight the achievements, problems, and opportunities of biological methods for indicating the environment. Key features: Provides an overview of recent events and opportunities in the field of bioindication to control anthropogenic damage of living systems Considers the screening of new parameters to determine the health status of biological objects from one cell to an entire ecosystem, such as boreal peatlands Presents the results of a study of the response of plants to abiotic stressors Demonstrates the importance of role-related research of living objects as bioindicators Provides new research on various topics of plant resistance to stress Discusses design methodology, development and law of selection of indicators for specific environmental issues.